# EVM Chain Balance Lookup

> EVM Chain Balance Lookup is a paid API for AI agents from tpgoose.ccwu.cc:8443, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Looks up the ETH/token balance and nonce for a given EVM address on Base or Ethereum, returning balance in both ETH and wei units.

## Facts

- Endpoint: GET https://tpgoose.ccwu.cc:8443/v1/chain/balance?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-chain-balance-lookup-762a8be0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jGzaStm4xikJLD-pQIw1X

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability evm-chain-balance-lookup-762a8be0
```

Example prompt: What's the current ETH balance of wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base? Give me the balance in both ETH and wei, along with the nonce.

## When to prefer this

Use this endpoint when you need a quick, no-account-required lookup of an EVM wallet's native ETH balance and nonce on Base or Ethereum, paid per-call with USDC. Prefer this over hosted RPC services when you want zero setup, or when you need a lightweight balance check without maintaining RPC subscriptions or API keys.

## Known failure modes

- Invalid or malformed 0x address returns an error
- Unsupported chain name (not 'base' or 'ethereum') returns an error
- Missing required query parameters (chain or address) returns a 400-level error
- Temporary RPC node unavailability may cause timeouts or 5xx errors
- Payment failure via x402 results in 402 Payment Required response

## How this service works

Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from Hub Europe (Germany). USDC on Base via x402. No account or API key.

## Output

Returns a JSON object containing: the queried address, chain name, current block number, account nonce, ETH balance as a decimal string (balance_eth), and raw balance in wei (balance_wei).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain",
      "address"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "example": "base",
       "description": "base or ethereum"
      },
      "address": {
       "type": "string",
       "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
       "description": "0x EVM address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "block": 36000000,
  "chain": "base",
  "nonce": 5,
  "address": "0x...",
  "balance_eth": "0.0123",
  "balance_wei": "12300000000000000"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-chain-balance-lookup-762a8be0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tpgoose.ccwu.cc:8443](https://www.zero.xyz/host/tpgoose.ccwu.cc%3A8443/llms.txt)